List of Figures
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Geodesic Sensor Net Technical Manual
S-MAN-200-GSNR-001 • January 31, 2007
chapter 3
GSN 200
3-1 128-channel GSN 200, front and side views
39
3-2 GSN 200 (256-channel model)
40
3-3 GSN 200 (128-channel model), without wire management
40
3-4 Electrode
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3-5 Pedestal components
42
3-6 Sensor
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3-7 Sensor cut-away view
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3-8 Outrider sensor
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3-9 Shorting straps for 64- and 128-channel infant GSN 200
45
3-10 Infant Net special Hypertronics connector, with outrider jacks strapped
to isolated common
45
3-11 Avoid passing connector or sensor end of GSN 200 through lead bundle
46
chapter 6
Applying the GSN
6-1 Measuring head circumference
60
6-2 Skull landmarks
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6-3 Measure from the nasion to the inion
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6-4 Measure between the preauricular points
62
6-5 Placing the sensor end of the Net in the electrolyte bucket
63
6-6 Lifting the Net out of the electrolyte bucket
64
6-7 The HCGSN features red pedestals for the nasion and cardinal points
65
6-8 Place thumbs under the Net’s perimeter band
66
6-9 Stretch the perimeter band with thumbs and little fingers
67
6-10 Slowly bring the band down over the head
68
6-11 Check position of Net before disengaging your hands
68
6-12 The HCGSN features cutouts for the ears
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6-13 Upturn tilted sensors; check the back of the head
69
6-14 The nasion is too far to the subject’s left
70
6-15 Adjust Net position by grabbing large sections and shifting them
uniformly
70
6-16 Adjust the orbital straps (128-channel HCGSN)
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6-17 Adjust big sections of the Net on both sides of the head
72
6-18 Check mastoid sensor positions (128-channel HCGSN)
72
6-19 Move each sensor side to side or in a circle to establish scalp contact
73
6-20 A properly applied Net
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